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Finding the Fourth Proportional to 118,375.50, 177,648.20 and 80,329.90

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Solution

The fourth proportional to 118,375.50, 177,648.20 and 80,329.90 is: 120,552.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,375.50 : 177,648.20 = 80,329.90 : x
  2. Step 2: Convert to fraction form
    118,375.50/177,648.20 = 80,329.90/x
  3. Step 3: Cross multiply
    118,375.50x = 177,648.20 × 80,329.90
  4. Step 4: Simplify right side
    118,375.50x = 14,270,462,141.18
  5. Step 5: Solve for x
    x = 14,270,462,141.18/118,375.50
  6. Step 6: Final answer
    x = 120,552.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.